Pincher, Chapman. Traitors : the anatomy of treason / Chapman Pincher. - New York : St. Martin's Press, 1987. - xvii, 346 p., [8] p. of plates : ill., ports. ISBN: 0312006969 LCCN: 66061257 Subjects--Topical Terms: Spies.Espionage--History--20th century.Treason--Psychological aspects